In the Asahi Shimbun in September there was a story as part of the series “[Answers to Questions that you] Can’t Ask Anymore” which offers explanations of complicated things that most people assume everybody understands, such as coral reefs.
On blood types:
“There is a strong tendency in Japan to associate personality traits and ABO blood types, but what are blood types?”
[Explanation of how blood types work omitted. Check Wikipedia if you must know.]
“So, back to [blood types’] relation to people’s personalities: ‘There is no research reported that would form the scientific basis for that,’ [explains the Tokyo University Legal Medicine Asst. Professor quoted for the article]. This is also the general opinion of the scientific community.”
A first step in deconstructing the myth and setting Japanese people on the path to rational thinking? Not bloody likely. Still, it’s good to see some public admission that it’s bunch of rubbish, even if it’s only buried at the end of a Sunday magazine article.